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Single Family ResidenceResidential
$508,264$370 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $358,082 on Jul 27, 2023

23 RIVERSIDE AVE

RIVERHEAD, NY 11901
4
Beds
2
Baths
1,372 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.52 ac
Lot SizeThe size of the land the home sits on, from county records.
1994
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$508K
$450K low$567K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$358,082 · Jul 27, 2023
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$508,264
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$406,611

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,267 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$309,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$123,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$490,793

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.52
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Inferior
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 1,054 ft²

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Phillips Avenue SchoolD-
Elementary · Grades PK–4 · 0.8 mi
M
Riverhead Middle SchoolD
Middle · Grades 6–8 · 2.3 mi
H
Riverhead Senior High SchoolC-
High · Grades 9–12 · 2.5 mi

District: Riverhead Central School District

Neighborhood · ZIP 11901These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.29,638
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.531 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$77,609
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,711
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

23 Riverside Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 89% of homes in Suffolk County
  • Costs less per square foot than 73% of homes in Riverhead 11901
  • Smaller than 68% of homes in Suffolk County
  • Has a bigger lot than 78% of homes in Flanders
  • Newer than 80% of homes in Suffolk County

What homes are worth in Riverhead 11901

Each bar is how many homes fall in that price range. The marker is this home.

This home
$357K$1.8M

This home is worth more than 25% of homes in Riverhead 11901.

How it measures up in Riverhead 11901

The dot is this home. The mark in the middle is the typical home in Riverhead 11901.

Estimated value$508,264
CheaperTypical $634,499Pricier

Pricier than 25% of homes nearby

Price per ft²$370
CheaperTypical $422Pricier

Pricier than 27% of homes nearby

Living area1,372 ft²
SmallerTypical 1,376 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.52 ac
SmallerTypical 0.31 acBigger

Bigger than 73% of homes nearby

Year built1994
OlderTypical 1991Newer

Newer than 57% of homes nearby

How 23 Riverside Ave ranks against every home in each area.
MeasureThis homeFlandersRiverhead 11901Suffolk County
Estimated valuepricier than$508,26452% of homes25% of homes11% of homes
Price per ft²pricier than$37028% of homes27% of homes34% of homes
Living areabigger than1,372 ft²63% of homes49% of homes32% of homes
Lot sizebigger than0.52 ac78% of homes73% of homes77% of homes
Year builtnewer than199449% of homes57% of homes80% of homes

About 23 Riverside Ave

How much is 23 Riverside Ave, Riverhead, NY worth?

The TopHap Estimate for 23 Riverside Ave, Riverhead, NY is $508,264 as of Jul 14, 2026. The likely range is $449,856 to $566,672. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Riverside Ave, Riverhead, NY last sell?

23 Riverside Ave, Riverhead, NY last sold on Jul 27, 2023 for $358,082, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 23 Riverside Ave, Riverhead, NY?

23 Riverside Ave, Riverhead, NY has 4 bedrooms, 2 bathrooms, 1,372 square feet of living space and a 0.52-acre lot.

When was 23 Riverside Ave, Riverhead, NY built?

23 Riverside Ave, Riverhead, NY was built in 1994, making it 32 years old. It is a mobile home home. The building has 2 stories.

What schools serve 23 Riverside Ave, Riverhead, NY?

23 Riverside Ave, Riverhead, NY is assigned to Phillips Avenue School (elementary), rated D-; Riverhead Middle School (middle), rated D; Riverhead Senior High School (high), rated C-. All sit in Riverhead Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Riverside Ave, Riverhead, NY compare to other homes in Riverhead 11901?

Among the 9,704 homes in Riverhead 11901, it is worth more than 25% of them ($508,264 against a typical $634,499), its price per square foot is higher than 27% of them ($370 against a typical $422), it is bigger than 49% of them (1,372 ft² against a typical 1,376 ft²), its lot is bigger than 73% of them (0.52 ac against a typical 0.31 ac) and it is newer than 57% of them (1994 against a typical 1991). Measured against all of Suffolk County, it is worth more than 11% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 23 Riverside Ave, Riverhead, NY?

The 2024 property tax bill for 23 Riverside Ave, Riverhead, NY was $5,267. The county assessed it at $309,200.

More homes on Riverside Ave

Closest homes

More homes in Riverhead 11901

Assigned schools

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